Cunningham



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WASHINGTON CUNNINGHAM, OF OXFORD, NEW YORK. Letters Patent No. 78,582', dated January `21, 1868;

IMPROVEMENT IN BUTTER-WORKERS.

TO ALL WHOM IT MAY CONCEBN:

Be it known that I, WASHINGTON CUNNINGHAM, of Oxford, in the county of- Chenango, and State of New York, have invented a new and useful Improvement in Implements or Machines forworking Butter; and I do hereby declare that -the following is a full and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference marked thereon, making a part of this specification, like letters s representing-like parts. Y l

Figure 1 represents a top view looking down from above.

Figure 2, a side elevation.

Figure 3, flanges or side iron in connection with the spring roller C.

Figure 4, section through shaft A.

The natureol` my improvement consists, firstly, in the mode in which I construct the shaft A, fig. 1, a sectional view of which is given in {ig.4, and in the particular form of the said shaft or compresser; second, my improvement has reference to the relative arrangement and combination of tho different parts of the car with the tray D and movable spring-roller C, the object of which is to cause the shaft or compresser A to rise whenlthe butter is hard, as it is in cold weather; third,.my improvement consists in the method of constructing and elongating the side rail E ofthe tray D= which forms aperfcct guide to the carriage F as well asa support to the same, in the manner hereinafter set forth; fourth, the manner of elevating thevforward ond of the tray D, instead of the rear, as in other patents, the advantage of which will be hereinafter described.

To enable others skilled in theart to make and use my invention, I will proceed to describe its construction and operation, f v

I construct the shaft or compresser A in the form of a rectangular prism, of a length and width proportional to the size of the tray. On the faces or sides of said shaftI atlix four oval ribs, G, a. sectional view of which is represented in iig. 4L The said shaft is supported upon hearings in the common manner, and turned by means of the crank H. When the crank is turned, the sharp corners of the compresser cut, and the oval ribs press out tho milk. I construct the tray D in any convenient form, and of any available dimensions, and adix upon thesides of the same the extension side rail E, which forms a perfect guide to thecarria-ge F, as well as a firm support to the same, and extends beyond the body of the tray in such a manner as to prevent the carriage F from falling over the end of the said tray when drawn to the rear end thereof, as it invariably does in other workers of asimilar nature, thus avoidingmuch inconvenience to the operator, and avoiding wrenching and straining the worker. The carriage is connected and firmly hold to the tray by means ofthe metallic flange B and spring-roller C. The object of the spring is to allow the shaft A to rise and fall according to the temperature and hardness of the butter. When the butter softens, as it invariably does on being worked, in consequence of thehca't generated by friction in4 working it, the stiffness of the spring will cause the compresser or shaft to descend nearer the bottom of the tray D. Thus the worker adapts itself to differences of temperature, and obviates the serious inconvenience which has been experienced in the use of other workers of a similar nature, which cannot be worked in cool`weather, when the butter ishard, except with great inconvenience and the exercise of great strength'. v A g I support the tray upon four Acommon legs. The legs supporting the forward end of the tray are'made longer than those supporting the rear end, and thus the forward end of the tray' is slightly elevated instead of the rear end, asin other workers. This enables the operator to pull the butter down an inclined planewhich is of course much more convenient.

Whnt'lI claim as my invention, and desire to secure by Letters Patent, is.- v

I. The spring-roller C, as herein set forth, which allows the compresser' A to rise and fall, for the purpose herein set forth.

2. Extending the side rail E, for the purpose of preventing the carriage F from falling, as herein set forth.

WASHINGTON CUNNINGHAM.

Witnesses:`

WALTER LILLIBRIDGE, J. R. WEEKS. 

